docusaurus: 2.0.0-beta.22 breaks cross-repo deploy to GitHub Pages

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I’m using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

Updating to docusaurus v2.0.0-beta.22 breaks my deployment to GitHub Pages.

The relevant commandline error follows:

[INFO] `git commit -m "Deploy website - based on 6f67bb9205e05e2d37ba6368e30774c48e6db78d"` code: 0
To github.com:yechs/website.git
 ! [remote rejected] master -> master (shallow update not allowed)
error: failed to push some refs to 'github.com:yechs/website.git'
[INFO] `git push --force origin master` code: 1
[ERROR] Deployment of the build output failed.
[ERROR] Error: Running "git push" command failed. Does the GitHub user account you are using have push access to the repository?
    at runDeploy (/Users/yeshu/Coding/Personal/website/node_modules/@docusaurus/core/lib/commands/deploy.js:168:19)
    at async Command.deploy (/Users/yeshu/Coding/Personal/website/node_modules/@docusaurus/core/lib/commands/deploy.js:189:13)
error Command failed with exit code 1.

According to the command line output, it looks like a shallow update problem. However, the weird thing is, docusaurus has been doing shallow clone deployments for almost a year now and has never failed before. Relevant PR: https://github.com/facebook/docusaurus/pull/5748

Logs

If you want a full log, there is one available from GitHub Actions (https://github.com/yechs/website/runs/7256462347)

And here is the successful log running yarn deploy on v2.0.0-beta.21 three days ago (https://github.com/yechs/website/runs/7204294330)

Reproduction

Just to rule out the variables of GitHub Actions or GitHub changing their behavior:

I’ve ran yarn deploy locally on v2.0.0-beta.22 and it failed with the same message. I have also manually reverted back to v2.0.0-beta.21 and ran yarn deploy, which functioned perfectly normal. (Note that it is doing the same shallow clone)

Reproducible demo

https://github.com/yechs/website/

Steps to reproduce

1. Run yarn deploy
2. Observe that it fails
3. git checkout 193d6e0 to go back to docusaurus v2.0.0-beta.21
4. Run yarn to install dependencies
5. Run yarn deploy
6. Observe that it succeeds

Expected behavior

Deployment continues to function as in v2.0.0-beta.21

Actual behavior

Deployment fails. See log from GitHub Actions.

Your environment

• Public source code:
  • Source code at https://github.com/yechs/website/
  • Deployed to https://github.com/yechs/yechs.github.io/
• Public site URL:
• Docusaurus version used:
  • v2.0.0-beta.22
• Environment name and version (e.g. Chrome 89, Node.js 16.4):
• Operating system and version (e.g. Ubuntu 20.04.2 LTS):
  • Ubuntu (GitHub Actions) with Node v16
  • MacOS with Node v16.15.1
  • Arch Linux with Node v16.14.2

Self-service

• I’d be willing to fix this bug myself.